15312311321351 has 16 divisors (see below), whose sum is σ = 17334863598240. Its totient is φ = 13397874833280.

The previous prime is 15312311321323. The next prime is 15312311321383.

It is a happy number.

15312311321351 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15312311321351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15312311321051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75610196 + ... + 75812441.

It is an arithmetic number, because the mean of its divisors is an integer number (1083428974890).

Almost surely, 2^{15312311321351} is an apocalyptic number.

15312311321351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15312311321351 is a deficient number, since it is larger than the sum of its proper divisors (2022552276889).

15312311321351 is a wasteful number, since it uses less digits than its factorization.

15312311321351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151422994.

The product of its digits is 8100, while the sum is 32.

It can be divided in two parts, 1531231 and 1321351, that added together give a palindrome (2852582).

The spelling of 15312311321351 in words is "fifteen trillion, three hundred twelve billion, three hundred eleven million, three hundred twenty-one thousand, three hundred fifty-one".